Wood-heel-turning machine



Nov I, 1927.

D. o. MARSHALL WOOD HEEL TURNING MACHINE Filed May 21, 1925 INVENTOE .-O. M6259 4. .BY 4

all

Patented Nov. 1, 1927,

warren STATES PATENT OFFICE.

IQAVID O. MARSHALL, OF ST. LQUIS, IvfCISSOUR-I, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO UNITED SHOE TEACHINERY CORPGRA'IION, OF PAEEESON, NEW/V JERSEY, A COR- EORATIOIT OF NEW JERSEY.

WOOD-HEEL-TURNING MACHINE.

Application filed. May 21,

This invention relates to wood heel turningmachines of the type that, as ordinarily constructed, comprise a pair of rotatable cutter heads arranged to rotate about parallel z axes spaced apart, a. carrier provided'with movedlaterally in the opposite direction to bring the blank into operative relationship with the other cutter which is used to trim the other ialf of the blank, and means for moving the blank verticall and also tilting the blank about a horizontal axis while the blank is being moved relatively to the cutters during the trimming operation.

Usually the vertical movement of the heel blank relatively to the cutters is effected by means of an inclined track, commonly referred to as a bottom track, that causes one member of the heel blank supporting means to move upwardly relatively to the cutter during the trimming operation, and the tiltof the blank is effected mainly by a second track, commonly referred to as a top track, that acts on a ack which is pivotally connected the horizontal axis mentioned to the vertically movable member of the heel supporting means, the heel blank being clamped in said jack.

The top track is adjust-ably mounted so that it can be set in different positions to vary the characteristics of the heel, and in previous wood heel turning machines of the general type referred to there is a possibilityafter the machine has become worn that the top track may spring or vibrate during the trimming operation, owing to the fact that said top track is supported partly by pivots arranged at the extreme rear end of the track and partly by an adjustable stop at the front of the machine near the operator on which the intermediate portion of track bears. Another objectionable c aracteristic of prior machines of this general type is that the top track cannot be set below zero or in such a posi tion that the jack which carries the heel blank will tilt downwardly relatively to the 1923. Serial No. 640,379.

cutters during the-trimming operation in the event it is desired to produce a military heel having a vertical back and vertical side faces.

One object of my invention is to provide a novel positive and rigid construction of a heel turning machine'of the general type referred to in which the top track is adjustably i'iounted, in order to eliminate vibration during the trimming operation.

Another object is to vprovide a heel turning machine that will be equipped with a top track which can be set at Zero and also in an upwardly-inclined position and a downwardly-inclined' position, thereby. increasing the range of adjustments of the ma chine and enabling it to be used for turning French heels of various contours and militaryiheels in which the side faces and back of the heel are either vertical or slightly inclined.

Another object of the invention is to pro vide a heel turning machine with a top track having a wide range of adjustments. The disclosed machine has a top track which is pivotally ad ustable about either its ends,

its quarter points or its middle or frontmost portion.

Still another object is to provide a heel turning machine that will be equipped with adjustable stops for determining-the start ing position of the heel blank when the jack is moved relatively to the carrier to bring the heel blank into operative relationship with the cutters, and an adjustable means of 7 simple design for enabling the top track to be moved bodily either upwardly or downwardly to change the level of said top track with relation to the cutters.

For the attainmentof these objects, the present invention provides a wood heel turning machine having a cam track pivoted substantial distance in front of its rear ends, thus permitting the increased range of adjustments above notedf The pivoting may be at the middle or between the middle and ends. In the illustrated machine, the pivots themselves are vertically adjustable, and the track is supported firmly at its ends and at another portion as well as at the pivot location. i

Figure 1 of the drawings is a side elevational view of an improved heel turning machine embodying the invention, showing the carrier arranged in its neutral or Zero position.

Figure 2 is a top plan view, showing the carrier arranged in operative relationship with one of the cutters and the jack swinging to the right during the operation of trimming onehalf of the heel blank; and

Figure 3 is a side elevational view, illustrating how the top track causes the jack to swing upwardly relatively to the verticallymovable member of the blank supporting means that carries said jack.

Referring to the drawings which illustrate the preferred form of my invention, A designates two vertically-disposed cutter shafts arranged in parallel relation and spaced apart, B designates cutters mounted on said shafts, C designates the frame of the machine, D designates a swinging carrier that is adapted to be swung to the right to bring the heel blank :0 into proximity to one of said cutters and thereafter swung to the left to bring said blank into proximity to the other cutter, E designates a vertically-rnovable member on the carrier D, and F designates as an entirety a jack that carries the heel blank and which is horizontally pivotally connected at 1 to the vertically-movable member E, said jack being of any preferred form of construction.

The machine is equipped with a bottom track G for moving the member E upwardly during the tumming operation, and an ad justable top track H for swinging the jack F relatively to the member E so as to tilt the heel blank during the trimming operation. The member E preferably consists of a vertically-disposed shaft mounted in the carrier D and provided at its lower end wit a laterally-projecting arm 2 that travels on the track G, said track being inclined upwardly, as shown in Figure 1, so that when the heel blank is moved relatively to the cutter during the trimming operation, the arm 2 will co-operate with said track G to raise the member E and thus novo the heel blank upwardly with relation to the cutter. Adjacent to each cutter is mounted a guide L against which turns a form or pattern M mounted on the member E below the jack. This form has approximately the shape of the bottom of the heel, and determines generally the depth of cut in the blank in that portion of the heel, as shown in Fi 2 and 3.

The top track H is adjustably mounted in such a way that it can be set in a horizontal position, usually referred to as its Zero position, in an upwardly-inclined po sition, usually referred to as above zero, and a downwardly-inclined position, usually referred to as below Zero. It is also con structed in such a manner that after it has been set it will be perfectly rigid, thereby eliminating vibration during the trimming operation. In order that the track H may be set in the various positions above referred to I pivotally mount said .track intermediate between its front portion and its rear ends and hold it in adjusted position by adjustable stops 3 and 4 that bear against the underside of said track at points on opposite sides of its axis of movement. In the machine herein shown the track H is substantially yoke-shaped in general outline and is provided at approximately its quarter points with laterally-projecting pivot pins 5 that turn in eyes 6 on uprights I carried by a horizontally-disposed bracket J on the frame of the machine. Said bracket J preferably consists of a one-piece rigid member of substantially yoke shape in general outline and the stops 3 and 4, previously referred to, are adjustably mounted in said bracket. In

order that the top track H may be moved bodily with relation to the bracket J, either u iwardlv or downwardly, 1 construct the uprights I in the form of screws that are adjustably connected to the bracket J by lock nuts 7. lVhile the bodily adjustment of the track H to vary the height of same is not essential, I prefer to construct said track in this manner, so as to increase the range of adjustments of the machine. The track is thus seen to be pivotally adjustable'about its ends at the tops of the screws 3, about an passing near or through its quarter points at 5, or about its central portion at the top of the screw l. The latter pivotal adjustment has important advantages, among which is the avoi lance of much of the vertical adjustment of the bracket J, wnich has been necessary with former machines.

The jack thus has a number of movements relatively to the cutter. It moves parallel to the cutter axis bv sliding the member E in the carrier D; it moves in directions perpendicular to the axis by virtue of the rotation of the carrier D about its vertical axis of rotation, and it rotates about the axis of the member E and about the at 1.

ieuiljustable stops K are provided for limiting the movement of the ack ll when said jack-is swung horizontally relatively to the carrier D to bring the heel blank 0; into op erative relationship with the cutters at the beginning of the trimming operation. As shown in Figure 2, the machine is equipped with two stops K arranged at the rear end of the track H in proximity to the cutters. In using the machine a heel blank is first clamped in the jack F conveniently when the carrier D is in its cent-ral position. Said carrier is then swung laterally to the left into th position shown in Figure 2 until the pattern h l rests against the guide L, and the handle of the jack F is pushed to the left until the jack engages the left hand stop K, thereby causing the heel blank to be arranged in such a position with relation to the left hand cutter that when the handie of the jack is thereafterswung to the right, keepingthe pattern and guide in contact, the left hand cutter will trim one-half the blank, the trimming operation beginning at the breast of the blank and terminating at the center of the rear end of the blank. After one-half of the blank has been trimmed the carrier D is swung to the right towards the right hand cutter, and the handle of the jack is moved to the right until the jack engages the right hand stop K. Thereafter, the jack is swung to the left, so

as to cause the right hand cutter to trim the other half of the blank. \Vhen the cutters are operating on the blank the bottom track G co-operates with the laterally-projecting arm 2 on the lower end of the member E to move the blank upwardly relatively to the cutter which is then operating on the blank,

and the top track H co-operates with the jack to tilt the blank relatively to the cutter during the trimming operation, the blank being tilted upwardly if the top track is set in the positions shown in Figures 1 and 3. By changing the position of the top track H the contour of the side faces and back of the heel produced in the machine can be changed, and when it is desired to produce a military heel having a vertical back and vertical side faces, thetop track H can be set in a downwardly-inclined position or below Zero.

A machine of the construction above described has a wide range of adjustments, owing to the fact that the top track H can be moved bodilyby adjusting the uprights I, and said track can be set in a horizontal poition, in an upwardly-inclined position or in a. downwardly inclined position.- After said top track has been set by moving the stops 3 and i upwardly into engagement with the underside ofsaid track, it will be perfectly rigid, having a clamped fourpoint support, thus eliminating vibration during the trimming operation. In addition to the desirable features above pointedout, my improved machine is equipped with adjustable stops K that co-operate with the jack of the heel blank supporting means to determine the position of the blank relatively to the cutters at the beginning of the trimming operation. structed and mounted in various ways, but I prefer to mount said stops on the rear end portion of the top track H and provide each of said stops with an adjusting screw 8 that can be manipulated so as to move the stop longitudinally of the portion of the track on which itis mounted, each of said screws being journaled in a laterally-projecting lug 9 on the top track and having its threaded portion projecting into a threaded opening in an ear on the stop.

Said stops K can be con-' rotatable cutter, a carrier that is adapted to be moved towards and away from said cut- 'ter, a heel blank supporting means on said carrier that is a'dapted to be moved after the blank has been brought into operative relationship with the cutter to cause the cutter to trim the blank, means for moving the blank vertically relatively to the cutter during the trimming operation, and an adjustable top'track for effecting an additional change in the relative position of the blank and cutter during the trimming operation, said top track being so constructed that it can be set in a horizontal position, in an upwardly-inclined position or in a downwardly-inclined position.

2. A heel'turning machine, comprising a rotatable cutter, a carrier that is adapted to be moved towards and away from said outter, a heel blank supporting meanson said carrier that is adapted to be moved rela tively to the cutter after the blank has been brought into operative relationship with the.

cutter to cause the cutter to trim the blank, means for moving the blank vertically relatively to the cutter during the trimming operation, an adjustable top track for effecting an additional change in the relative posi tion of the blank and cutter during the trimming operation, said top track being pivotally mounted between its middle and ends, and means for rigidly holding said top track after it has been set in adjusted position.

8. A heel turning machine, comprising a rotatable cutter, a carrier adapted to be moved towards and away from said cutter, a vertically-movable member on said carrier, a pivotally mounted jack on said member adapted to'hold a heel blank, a bottom track for causing said vertically-movable member to move vertically during the trimming operation, a top track that co-operates with said jack, for the purpose described, said top track being pivotally mounted between its central portion and itsends and adjustable devices arranged on opposite sides of the pivots of said top track and adapted to bear against said track for holding it in adjusted position.

4. A heel turning machine, comprising arotatable cutter, a carrier adapted to be moved towards and away from said cutter, a vertically-movable member on said carrier provided with a pivotally mounted jack, means for raising said vertically-movable member during the trimming operation, a top track that co-operat'es with said jack to tilt the blank relatively to the cutter during the trimming operation, means for enabling said top track to be moved bodily, and independent means for enabling said-top track' lit;

to be set in a horizontal position, in an upwardly-inclined position, or in a clownwardly-inclined position.

5. A heel turning machine, comprising a rotatable cutter, a heel blank jack that is adapted to be swung horizontally to oscil late the blank relatively to the cutter during the trimming operation, a track that cooperates with said jack to tilt the blank rela tively to the cutter during the trimming operation, said track being pivoted at about one-fourth of its length from its ends, and adjustable stops that bear against the underside of said track at points to the front and to the rear of the pivots of said track for holding said track rigid.

6. A heel turning machine, comprising a pair of rotatable cutters, a carrier that is adapted to be moved towards and away from said cutters, a verticallymovable member on said carrier, a pivotally mounted jack on said member adapted to support a heel blank, a bottom track for raising said verticallymovable member during the trimming operation, a top track that co-operates with said jack to tilt same relatively to said verticallymovable member during the trimming operation, pivots for said top track arranged interminate between the front portion and the rear ends of same, and adjustable stops arranged at the front of andat the rear of the pivots of said top track and adapted to bear against the underside of said track for holding said track rigidly in adjusted position.

7 A heel turning machine provided with a pair of rotatable cutters arranged in spaced relation, a swinging carrier arranged in proximity to said cutters and adapted to be moved towards and away from same, a heel supportingmeans on said carrier comprising a pivotally-mounted jack adapted to carry a heel blank, a top track on which said jack rides during the trimming operation, supports on which said track is pivotally mounted adjacent to its center as viewed transversely, a rigidv bracket on the frame of the machine that carries said supports, and adjustable stops on said bracket that bear against said track at points on opposite sides of the pivots of said track for holding said track in adjusted position.

8. A heel turning machine, comprising a pair of rotatable cutters arranged in spaced relation, a carrier adapted to be moved towards and away from said cutters, a member movably mounted on said carrier and provided with a jack that is adapted to carry a heel blank, and adjustable stops that cooperate with said movably mounted member for determining the angular position of the heel blank relatively to the cutters at the beginning of the trimming operation.

9. A heel turning machine, comprising a pair of rotatable cutters arranged in spaced relation, heel blank supporting means adapted to be moved into operative relationship first with one cutter and then with the other cutter, said means comprising a pivotally mounted jack, a track on which said ack travels during the trimming operation, pivots for said track arranged about half way between the front and rear portions thereof, means for rigidly holding said track in adjusted position, and adjustable stops on the rear end portion of said track arranged behind the pivots of'the track and adapted to coope ate with the jack to determine the position of the blank relatively to the cutters at the beginning of the trimming operation.

10. A heel turning machine, comprising a rotatable cutter, a carrier that is adapted to be moved towards and away from said outter, a heel blank supporting means on said carrier that is adapted to be moved relatively to the cutter after the blank has been brought into operative relationship with the cutter to cause the cutter to trim the blank, means for moving the blank vertically relatively to the cutter during the trimming operation, and an adjustable cam track for effecting an additional change in the relative positions of the blank and cutter during the trimming operation, said cam track being pivotally mounted between its middle and ends.

11. A heel turning machine, comprising a rotatable cutter, a carrier adapted to be moved towards and away from said cutter, a vertically-movable member on said carrier, a pivotally mounted ack on said member adapted to hold a heel blank, a bottom track for causing said vertically-movable member to move vertically during the trimming operation, and a top track that co-operates with said jack, for the purpose described, said top track being pivotally mounted between its central portion and its ends.

12. A wood heel turning machine having a rotating cutter, a ack arranged to hold a heel blank, and constructed and arranged for relative movements of rotation about axes parallel and perpendicular to the cutter axis respectively, and for relative movements parallel to the cutter axis and in a plane perpendicular to the cutter axis, respectively, and a cam track for eifecting the said rota tional movement about the said perpendicular axis of curved form extending generally forwardly from the cutter toward the operator, and pivoted intermediate between the end near the cutter and the portion near the operator.

13. In a machine of the class described, a rotating cutter, a jack supported in opera tive relation to the cutter and arranged. for compound movement comprising swinging horizontal movement and rotation about a horizontal axis, and a cam track for controlling the rotation about the horizontal axis as the jack is swung by the operator, said cam track being rotatably adjustable about an axis substantially in front of the rear end of the track.

1%. In a machine of the class described. a rotatingcutter, a jack supported in operative relation to the cutter and arranged for compound movement comprising swinging horizontal movement and rotation about a horizontal axis, a cam track for controlling the rotation about the horizontal axis'as the jack is swung by the operator, and means for positively vertically positioning the rear end of the cam track in different positions, while leaving the height of the front portion substantially unchanged.

15. In a machine of the class described, a rotating cutter, a jack supported in operative relation to the cutter and arranged for swinging horizontal movement, vertical movement, and rotation about a horizontal axis, and cam track for controlling the rotation about the horizontal axis as the jack is swung by the operator, said cam track being pivotally mounted at its front portion.

16. In a machine of the class described, a rotating cutter, a jack supported in operative relation to the cutter and arranged for swinging horizontal movement, vertical movement, and rotation about a horizontal axis, a cam track for controlling the rotation about the horizontal axis as the jack is swung by the operator, a support for the front portion of the cam track and about which the track is pivotally movable, and means for holding the rear end of the track in different positions of vertical adjustment.

1?. In a machine for trimming wood heels, a rotating cutter, a hold-er for a wood heel blank arranged to be moved relatively to the cutter to shape the heel against it and to have a tilting movement about a hori zontal axis as it moves relatively to the cutter, and a jack tilting cam supporting the blank hold-er, constructed and arranged to tilt the blank holder about the said horizontal axis as it moves relatively to the.

cutter, said cam being supported at its point which is nearest to the operator and being arranged for rotational adjustment about this point.

18. A machine for trimming wood heels comprising a cutter upon a vertically rotating shaft, a jack arranged to swing about a vertical axisrelatively to the cutter and to be tilted about a horizontal axis toward or from the cutter while being so swung, a generally horizontally arranged cam track supporting the jack and arranged to tilt it about the horizontal axis as it swings about the vertical axis, said cam track extending in a convex curve about the cutter shaft to a point substantially in front of the operator of the machine, being mechanically supported at this point and being arranged for an up-and-down rotational movement about this point in order to adjust it for cutting different styles of heels.

19. A machine for trimming wood heels comprising two vertical cutter shafts carry ing cutters, a jack arranged to carry a wood heel blank andto, swing in a generally horizontal direction relatively to the cutters to shape the wood heel blank carried by it and arranged also to tilt about a horizontal axis to throw the blank toward or from the cutter while being so swung, and ack tilting means comprising a generally semi-circular device extending from the vicinity of one cutter shaft to the corresponding vicinity of the other and having its convexity bowet out toward the operator of the machine, said devlce belng supported at a central point directly in front of the operator and being arranged for up-and-down rotary adjustment about this point in order to vary the tilting movements of the jack to corresponc to different styles of heels.

20. In a machine of the class described, a rotating cutter, a jack supported in operative relation to the cutter and arranged for swinging horizontal movement, vertical movement, and rotation about a horizontal axis, a cam track having its rear end near the cutter for controlling the rotation about the horizontal axis as the jack is swung by the operator, a bracket vertically adjustable upon the frame of the machine, a post on the bracket arranged to support the front portion of the cam track, and means for holding the rear end of the track in different positions of vertical adjustment rela tively to the bracket.

DAVID O. MARSHALL.

E no 

